.page-faq {
  --faq-rail-w: 226px;
  --faq-gap: clamp(20px, 3.2vw, 44px);
  --faq-head-offset: calc(var(--head-h-sm) + 20px);
}

@media (min-width: 960px) {
  .page-faq {
    --faq-head-offset: calc(var(--head-h) + 24px);
  }
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumb {
  padding-top: 18px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(30px, 4.4vw, 54px);
  background:
    radial-gradient(115% 92% at 88% 6%, rgba(47, 242, 213, .16), transparent 58%),
    radial-gradient(88% 78% at 2% 98%, rgba(255, 122, 46, .11), transparent 62%),
    var(--sky-900);
  border-bottom: 1px solid var(--sky-600);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 3.4vw, 42px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(30px, 5.4vw, 54px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.012em;
  color: var(--ice-050);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--ice-300);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 26px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--sky-600);
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--ice-300);
}

.page-faq .faq-hero__stats .num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan-500);
}

.page-faq .faq-hero__stats .unit {
  font-size: 13px;
  color: var(--ice-300);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-lg);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  padding: clamp(26px, 3.8vw, 46px) 0 clamp(40px, 6vw, 74px);
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 分类胶囊 ---------- */
.page-faq .faq-rail {
  align-self: start;
}

@media (min-width: 960px) {
  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-head-offset);
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ice-300);
}

@media (max-width: 959px) {
  .page-faq .faq-rail__title {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

@media (min-width: 960px) {
  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 10px;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--sky-600);
  }
}

.page-faq .faq-rail__list .pill {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 9px 16px;
  border: 1px solid var(--sky-600);
  border-radius: var(--r-pill);
  background: var(--sky-700);
  color: var(--ice-300);
  font-size: 14px;
  line-height: 1.3;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

@media (min-width: 960px) {
  .page-faq .faq-rail__list .pill {
    border-radius: 0 var(--r-pill) var(--r-pill) 0;
    border-left-color: transparent;
    justify-content: flex-start;
  }
}

.page-faq .faq-rail__list .pill:hover {
  border-color: var(--cyan-300);
  color: var(--ice-050);
  background: var(--sky-700-hi);
}

.page-faq .faq-rail__list .pill[aria-current="true"] {
  border-color: var(--cyan-500);
  color: var(--cyan-500);
  background: var(--sky-700-hi);
}

.page-faq .faq-rail__list .pill:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 2px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: var(--faq-head-offset);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 5vw, 62px);
}

.page-faq .sec-head {
  position: relative;
  padding-left: 18px;
  margin-bottom: 18px;
  border-left: 2px solid var(--sky-600);
}

.page-faq .sec-head__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--cyan-500);
}

.page-faq .sec-head__title {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 400;
  line-height: 1.3;
  color: var(--ice-050);
}

.page-faq .sec-head__note {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--ice-300);
}

/* ---------- 问答卡 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--sky-600);
  border-radius: 16px;
  background: var(--sky-700);
  overflow: hidden;
  transition: border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--cyan-300);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan-500);
  background: var(--sky-700-hi);
  transform: none;
}

.page-faq .faq-q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 18px;
  list-style: none;
  cursor: pointer;
  color: var(--ice-050);
  font-family: var(--font-head);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 500;
  line-height: 1.6;
  transition: color .2s var(--ease);
}

.page-faq .faq-q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: -2px;
  border-radius: 16px;
}

.page-faq .faq-q__no {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ice-300);
  transition: color .2s var(--ease);
}

.page-faq .faq-item[open] .faq-q__no {
  color: var(--cyan-500);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__mark {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--sky-600);
  border-radius: 50%;
  transition: border-color .2s var(--ease);
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan-500);
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .faq-q__mark::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-q__mark::after {
  width: 1.5px;
  height: 10px;
}

.page-faq .faq-item[open] .faq-q__mark {
  border-color: var(--cyan-500);
}

.page-faq .faq-item[open] .faq-q__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-q::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-500) 0%, rgba(47, 242, 213, .12) 62%, transparent 100%);
}

.page-faq .faq-a {
  max-width: 40em;
  padding: 2px 20px 20px 54px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ice-300);
  overflow-wrap: break-word;
}

.page-faq .faq-a p {
  margin: 0;
}

.page-faq .faq-a .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .96em;
  color: var(--cyan-500);
}

@media (max-width: 599px) {
  .page-faq .faq-a {
    padding: 0 18px 18px 18px;
  }
}

/* ---------- 移动端分组图文 ---------- */
.page-faq .faq-mobile-block {
  display: grid;
  gap: 18px;
}

@media (min-width: 860px) {
  .page-faq .faq-mobile-block {
    grid-template-columns: minmax(0, 1fr) minmax(0, .62fr);
    align-items: start;
    gap: 24px;
  }
}

.page-faq .faq-mobile-figure {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--sky-600);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 100% at 80% 0%, rgba(47, 242, 213, .12), transparent 60%),
    var(--sky-800);
}

.page-faq .faq-mobile-figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-faq .faq-mobile-figure .figure__cap {
  margin: 12px 2px 2px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ice-300);
}

/* ---------- 底部行动区 ---------- */
.page-faq .faq-cta {
  padding: 0 0 clamp(44px, 6vw, 80px);
}

.page-faq .faq-cta__card {
  position: relative;
  padding: clamp(24px, 3.4vw, 40px);
  border-radius: var(--r-xl);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(255, 122, 46, .14), transparent 58%),
    var(--sky-800);
  overflow: hidden;
}

.page-faq .faq-cta__card::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: var(--r-xl);
  background: var(--aurora);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

.page-faq .faq-cta__card h2 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 300;
  line-height: 1.28;
  color: var(--ice-050);
}

.page-faq .faq-cta__card p {
  margin: 12px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ice-300);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-cta__actions .btn {
  text-decoration: none;
}

.page-faq .faq-cta__actions .btn:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .faq-q__mark,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-rail__list .pill {
    transition: none;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }
}